Safety hasp keeper



' Feb.22, A1949.1 T. ,HQMAsoN y l VSAFETY HAsKP KEEPER i 2ShjOet's-Sheet lv Filed Aug'. 59K 1947 v m Er:

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INVENTOR.

\ THOMAS H.MAsoN BY za Z Flea Flair.

ATTQRNEY Feb. 22, 1949. T. H.MAsoN 462,523

I SAFETY HASP KEEPER Filed Aug. 9, vl'z'l 2 sheets-sheet 2 f, INVENTOR.o THOMAS H.MAsoN BY W ATTORNEY Patented Feb. 22, 1949 UNITED STATESPATENT OFFICE- 7 Claims.

This invention relates to a safety hasp keeper 4for use on emergencyexit doors and more particularly for use on doors on government bon-ded'premises such as registered distilleries, internal 'safety hasp keeperhaving a keeper element which is made of a material, such as hard lead,which may be severed fairly easily, and with which there is associated aknife member which may be struck to shear off said element, thuspermitting emergency opening of the door without removing the lock whichnormally locks the hasp to the keeper.

Other objects and advantages of the invention will appear from thefollowing detailed description taken in connection with the accompanyingdrawings, wherein I have shown a preferred embodiment of the invention.

Referring to the drawings:

Fig. 1 is an elevational view of the inside of a door and frame with thesafety hasp keeper applied thereto;

Fig. 2 is an enlarged elevational and sectional View of the keeper andhasp;

Fig. 3 is a transverse section taken on line 3-3 of Fig. 2;

Fig. 4 is a transverse section taken on line 4-4 of Fig. 2;

Fig. 5 is a vertical section taken on line 5 5 of Fig. 2;

Fig. 6 is a vertical section taken on line 6 6 of Fig. 2;

Fig. 7 is an elevational View of the keeper face plate;

Fig. 8 is an elevational view of the ller plate; and

Fig. 9 is an elevational view of the keeper plate.

Referring to the drawings in detail, astandard steel hasp consisting ofsections II',` and I2, hinged at I3, is mounted on the inside of a steeldoor frame I4, being preferably mounted thereon by welding the sectionII to the frame I4. The section I2 of the hasp is provided with a slotI5 (Fig. 4) for receiving a keeper element or bolt I6 mounted on arectangular keeper plate |1. This keeper bolt I6, in accordance withmyinvention,

is made of hard lead or other material having considerable strength, butstill capable of being sheared fairly easily, and is xedly secured to asteel plate I1, the openings in said plate which receive the ends of thebolt being countersunk, as illustrated at I8, so that after the ends ofthe bolt have been inserted through the plate they may be peened over tosecurely anchor the bolt in place.

The keeper bolt I6 and plate Il are removably mounted on the insidey ofthe door I9, in position for the bolt to be engaged by section I2 of thehasp, by means of an assembly consisting of a face plate 2I to which iswelded a filler plate 22, each of said plates being provided with fourbolt holes 23 for receiving round-headed bolts 24, the latter extendingthrough the door from the outside and serving to removably secure theplate assembly to the inside of the door by means of nuts 25 whichengage the inner threaded ends of said bolts and clamp the platesecurely to the inside of the door.

The ller plate 22 is provided with a rectangular opening 26 (Fig. 8) forreceiving keeper bolt plate I1, and the face plate 2l is provided with aslotted opening 21 (Fig. 7) for receiving keeper bolt I6. It will beapparent that the keeper bolt and plate assembly is thus removablysecured to the inside of the door and that plate I1 and keeper bolt I6are likewise removably mounted in the plate assembly, it merely beingnecessary to remove bolt nuts 25, whereupon plates 2| and 22 may beremoved, after which plate Il and bolt I6 may then be removed from theplate assembly. Normally the hasp is locked to the keeper bolt by aypadlock 28 (Fig. 5) since the invention is inten-ded primarily for useon doors which are normally locked from the inside, for example inbonded distillery rack warehouses, and when so used a government sealmay be provided, consisting of a seal 29 (Fig. 2) and a wire 3I, thelatter extending through a hole 32 in face plate 2| and a hole 33 in oneof the bolt nuts 25.

In accordance with my invention, means is provided for shearing orcutting off keeper bolt I6 to permit of emergency release of the haspeven though it remains normally locked by padlock 28. To this end Iprovide a hardened steel blade 34 which is mounted for vertical slidingmovement against the innersurface of face plate 2| by means of a pair ofguide brackets 35 xedly secured to face plate 2l, and each consisting ofa steel half-channel shaped strip the lower ends "and sides of which areclosed, the upper ends being open, the brackets being oppositelydisposed as illustrated in Fig. 2, to provide guide tracks for verticalmovement of blade 34. The lower end of blade 34 is ground to a cuttingedge 36 which normally rests against the upper side of keeper bolt I6,as illustrated in Fig. 5, and the Upper end of said blade is flanged toprovide an exposed inwardly projecting flange or lip 31 Awhich isreinforced by a rib 38. It will be ap- Vfor striking the knife blade 34to effect emergency opening.

Once emergency opening has been effected the severed keeper bolt i6 mayeasily be replaced by simply breaking the seal 2S, removing bolt nuts25, whereupon plate assembly iii-22 and keeper plate Il may be removed.A new lead keeper boltl IE may then be secured to plate Il. Said plate,with the new bolt therein, can then be reinserted from the rear into theopening 26 in filler plate 22, the assembly then being secured back tothe inside face of the door by bolt nuts y 2,5. A fresh government seal29 may then be secured in place and the padlock 28 reinserted throughkeeper bolt Iii to re-lock the door from the inside.

While I have particularly illustrated and described the application ofthe novel safety hasp keeper to the inside of exit doors which arerequired to be normally locked, as in bonded distillery rack warehouses,it will be apparent that the device .may be applied generally to doorsfor which emergency opening may be required.

What I regard as new and desire to secure by Letters Patent is:

l. An emergency release mechanism for door locks comprising a lockingelement, a keeper elevment, means for supporting the keeper element inposition to be engaged by said locking element, the keeper element, whenso engaged, being adapted to receive a lock to secure the door innormally locked position, and manually operable means, including a knifemember carried by said keeper element supporting means and formed of amaterial harder than the keeper element, for cutting said keeper elementto release it from the locking element and allow opening of the doorwithout requiring removal of the lock.

2. An emergency release mechanism for door locks comprising a hasp, akeeper element, means for supporting the keeper element in position tobeengaged by said hasp, the keeper element, when Aso engaged, beinradapted to receive a lock to secure the door in normally lockedposition, said keeper element being formed of hard lead or other readilyshearable material, and manually operable means, including a knifemember carried by said keeper element supporting means, for cutting saidkeeper element to release it from the hasp and allow opening of the doorwithout requiring removal of the lock.

3. An emergency release mechanism for 4door locks comprising a lookingelement, a keeper element, means for supporting the keeper element inposition to extend through said locking element and receive a lock tosecure the door in normally locked position, and a knife member mountedon said keeper element supporting means in position to move against saidkeeper element, said knife member being formed of a harder material thanthe keeper element and having an exposed portion adapted to be struck todrive the cutting edge thereof through the keeper element, therebyreleasing the latter from the locking element to permit opening of thedoor without requiring removal of the lock.

4. An emergency release mechanism for door locks comprising a hasp, akeeper element, means for supporting the keeper element in position toextend through said hasp and receive a lock to secure the door innormally locked position, said keeper element being formed of hard leador other readily shearable material, and a knife member mounted on saidkeeper element supporting means in position to move against said keeperelement, said knife member having an exposed portion adapted to bestruck to drive the cutting edge thereof through the keeper element,thereby releasing the latter from the hasp to permit opening of the doorwithout requiring removal of the lock.

5. An emergency release mechanism for door locks comprisingr a haspadapted to be fastened to a door frame and a keeper assembly, includinga mounting plate, a keeper element secured to said plate and adapted toextend through said hasp and receive a lock to secure the door innormally locked position, means for removably fastening said plate tothe door, and a knife member carried by said fastening means for cuttingsaid keeper element to release it from the hasp and allow opening of thedoor Without requiring removal of the lock, said keeper element beingformed of a material that will shear when the knife member is struck anddriven against it.

6. An emergency'release mechanism for door locks comprising a lockingelementy adapted to be fastened to a door frame, a keeper elementengageable by said locking element and adapted, when so engaged, toreceive a lock to secure the door in normally locked position, andlmanually operable means for cutting said keeper element to release itfrom the locking element and allow opening of the door without requiringremoval of the lock, said means including a keeper mountplate, a faceplate and a filler plate secured thereto, the latter having an openingfor receiving and holding the keeper mounting plate and the face platehaving an opening for receiving the keeper element, a knife member,guide means carried by said face plate for holding said knife member inposition for movement against the keeper element, said knife memberbeing formed of a harder material than the keeper element and having anexposed portion adapted to be struck yto drive th-e cutting edge thereofthrough the keeper element, and means for removably fastening thefaceplate and filler plate to the door.

'.7. An emergency release mechanism for door locks comprising a lockingelement adapted to be fastened to a door frame, a mounting plate, akeeper element having one end thereof secured to said plate, the otherendb-eing'engageable by said locking element and adapted, when soengaged, to receive a lock to secure the door in normally lockedposition, means for removably fastening said plate to the door, and aknife member carried by said fastening means for'cutting 5 `the keeperelement `to release it from the locking REFERENCES CITED element and HOWOpening of 'the door Without The following references are of record inthe requiring removal of the lock, said knife member f being formed of aharder material than the keepme of ms patent' er element and saidmounting plate likewise beiner 5 UNITED STATES PATENTS formed of a,harder material than the keeper Number Name Date element t0 permit theend 0f the latter t0 be 1371 087 Halslett Mar 8 1921 readily driven fromsaid plate, after severance, 1473080 Comm Nov' 6 1923 to facilitateinsertion of a new keeper element. 1:546:175 Lyons July' 14, 1925 12,046,078 Marshall June so, 1936 THOMAS H- MASON' 2,275,760 Hoffman Mar.10, 1942

